Can't draw to SysListView32 control on Win 7?

I'm trying to draw an animation to the desktop(A polar clock is my final goal), but I can't seem to manage to draw to the desktop.

I can get the handle and the DC for the window with this code:

HWND progMan  = FindWindow("progMan", NULL); 
HWND she开发者_运维技巧llDLL = FindWindowEx(progMan, NULL, "SHELLDLL_DefView", NULL);
HWND sysList  = FindWindowEx(shellDLL, NULL, "SysListView32", NULL);
HDC hdc = GetDC(progMan);

and I can use this code to write text, which works when getting at other windows or controls:

while(true) TextOut(hdc, 50, 50, "Hello World!", 13);

but I can't seem to manage to get it to work on the SysListView32 control.

Is this some quirk of Windows 7 or is my code just bugged?

Edit: I'd like to get this to work, but worst-case, does anyone else have any other method of drawing to the desktop behind the icons?

Replace Progman with WorkerW and it should work in most cases. But there is more to it, so search the web for details.

Try Spy to get the correct order of the Windows . I had written this code sometime back, not sure if I have it with me right now . However Spy helped me a lot. Though this link has nothing to do with the desktop - http://blogs.msdn.com/b/oldnewthing/archive/2004/07/20/188696.aspx , you might get some help from this too.